nonblocking

I learned that in Node.js you yield in between long computations to prevent the server from blocking. How do you achieve this on Meteor? Are there techniques for also doing this on the client? I am new to web development, simple examples would be appreciated. Meteor uses Fibers which behave a little different than usual Node.js code. I believe there's no need to yield manually. Instead, you may want to use this.ublock() method on the server side – see this awesome article that explains it in details. If you're doing something really heavy on the client side (like calculating Mandelbrot set),

For example, I have a http server, which is node.js, so is non-blocking. For each request will do a DB operation. what I cannot understand is that what is the difference between a blocking DB operation and a non-blocking DB operation? Since the web server is non-blocking, so a blocking DB operation inside the request makes no difference? Here's an analogy that might help you understand. Let's suppose you're in sales and you have 50 phone calls to make today. In the blocking model, you place a call and, if the person isn't ready to talk to you, you have to sit on the line and you wait and you

I'm trying to supply a timeout for connect(). I've searched around and found several articles related to this. I've coded up what I believe should work but unfortunately I get no error reported from getsockopt(). But then when I come to the write() it fails with an errno of 107 - ENOTCONN. A couple of points. I'm running on Fedora 23. The docs for connect() says it should return failure with an errno of EINPROGRESS for a connect that is not complete yet however I was experiencing EAGAIN so I added that to my check. Currently my socket server is setting the backlog to zero in the listen() call.

I have two threads that I'm dealing with Java NIO for non-blocking sockets. This is what the threads are doing: Thread 1: A loop that calls on the select() method of a selector. If any keys are available, they are processed accordingly. Thread 2: Occasionally registers a SocketChannel to the selector by calling register(). The problem is, unless the timeout for select() is very small (like around 100ms), the call to register() will block indefinitely. Even though the channel is configured to be nonblocking, and the javadocs state that the Selector object is thread safe (but it's selection keys

With Node.js, or eventlet or any other non-blocking server, what happens when a given request takes long, does it then block all other requests? Example, a request comes in, and takes 200ms to compute, this will block other requests since e.g. nodejs uses a single thread. Meaning your 15K per second will go down substantially because of the actual time it takes to compute the response for a given request. But this just seems wrong to me, so I'm asking what really happens as I can't imagine that is how things work. Whether or not it "blocks" is dependent on your definition of "block". Typically

A very good article (When Runtime.exec() won't) says: The only possible time you would use exitValue() instead of waitFor() would be when you don't want your program to block waiting on an external process that may never complete. Instead of using the waitFor() method, I would prefer passing a boolean parameter called waitFor into the exitValue() method to determine whether or not the current thread should wait. A boolean would be more beneficial because exitValue() is a more appropriate name for this method, and it isn't necessary for two methods to perform the same function under different